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Last Updated
03/08/14 07:55 PM

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Roofing Application Instructions: Laminated Shingles

Laminated shingles are built on a fiber glass base to provide a Class A fire resistance rating. Wind warranties are graduated according to the product’s warranty duration: A 25-year laminated shingle provides a 60 mph wind warranty, a 30-year duration provides 70 mph, a 40-year duration provides 80 mph, a 50-year duration provides 90 mph and a limited-lifetime duration is warranted up to 110 mph.
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NOTE: The wind warranty for 30-year laminated shingles increases from 70 mph to 80 mph when fastened with six nails instead of four. Six nails are required for Architect 80 which carries a 100 mph wind warranty. (Roofing cement is not required, except on steep slopes.)

Deck preparation, ventilation, underlayment, and ice-dam protection are all routine. 

Fastening instructions are stringent and must be followed. 


General Information and Requirements

Figure 1: Proper and improper nailing.
Fastening

IMPORTANT: For decks 3/4" (19 mm) thick or thicker, nails must go at least 3/4" (19 mm) into the deck. On thinner decks, nails must go at least 1/8'' (3.2 mm) through the deck.

Nails must be 11- or 12-gauge roofing nails, corrosion-resistant, with at least 3/8" (9.5 mm) heads, and at least 1" (25 mm) long. Landmark TL requires nails at least 1 1/4" long.


Low and Standard Slope

Use four nails for every full shingle (Figures 2 and 3).
(Asphalt roofing cement should meet ASTM D4586 Type II.)

ENGLISH
METRIC


   

Figure 2: English - Use four nails for every full shingle. Figure 3: Metric - Use four nails for every full shingle.

LANDMARK TL

Figure 4: Landmark TL - use four nails for every full shingle.

Steep Slope

Use six nails and four spots of asphalt roofing cement for every full laminated shingle.
(Asphalt roofing cement should meet ASTM D4586 Type II.)

CAUTION: Excessive use of roofing cement can cause shingles to blister.

ENGLISH

Figure 5: Use six nails and four spots of asphalt roofing cement on steep slopes.

METRIC

Figure 6: Use six nails and four spots of asphalt roofing cement on steep slopes.

LANDMARK TL

Figure 7: Use six nails and four spots of asphalt roofing cement on steep slopes.

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One Clean-Deck Application Method
for English Dimension Shingles

Five-Course Diagonal Method (“Sevens and Fourteens”)



PREPARING THE DECK:

Roof deck must be at least 3/8" (9.5 mm) thick APA-approved plywood, or at least 7/16" (11 mm) thick APA-approved non-veneer, or at least nominal 1" (25 mm) thick wood deck, not more than 6" (150 mm) wide.

Apply underlayment as required. CertainTeed suggests that a layer of shingle underlayment be applied. For UL fire rating, underlayment is generally required. Apply flat and unwrinkled.

Snap horizontal and vertical chalklines to assure shingles will be correctly aligned. Expose all shingles 5" (125 mm).
 
Figure 8: Standard slope underlayment and starter drip edge details.

STARTER COURSE:
Figure 9: Make starter shingles by removing the lower 5" tabs.

1. Use standard three-tab self-sealing
shingles as the starter shingles, after
removing the lower 5" tab portions
(Figure 9).

2. For the first starter, cut 7" from one of the starter shingles.

3. Apply the 29" piece to the lower left
corner of the roof. Make sure there is 1/2" overhanging the rakes and eaves if drip edge is being used. If you are not using drip edge, make the overhang 3/4".

4. Use full 36" long, 7" wide starter shingles for the rest of the course.

Figure 10: Applying the first 5 courses on a standard slope.

1ST COURSE:
Apply a full shingle at the lower left corner of the roof. Make the lower edge and left edge lie flush with the edges of the starter course (Figure 10).

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2ND THROUGH 5TH COURSES:

CAUTION! Failure to follow instruction steps 1-5 below will bring joints too close together and may cause unattractive patterns!

1. Cut 7" off the left end of the first shingle and save this piece for later use. Apply the 29" long piece over and above the first-course shingle. Leave the bottom 5" tab portion of the first-course shingle exposed
(Figure 10).
2. Cut 14" off the first shingle of the third course and save this for later. Install the 22" long piece over and above the second-course shingle.
3. Apply the previously removed 14" long piece over and above the third-course shingle.
4. Apply the previously removed 7" long piece from the second course over and above the fourth-course shingle.
5. Install a full shingle against the right edge of each shingle in courses one through five.


CONTINUING UP THE ROOF:
1. Beginning again with a full shingle, repeat the five-course pattern up the left rake
(Figure 11 - see B).
2. Fill-in courses across the roof in a stepped diagonal fashion using full shingles
(Figure 11 - see A and B). Do not run courses straight across.

IMPORTANT: Do not align joints of shingles closer than 3 1/2" from one another.

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Figure 11: "Five-Course Diagonal Method" installation schematic.

 

 


Figure 12: Highlight of closed-cut valley details.


Back to Top
 

Five-Course Diagonal Method (5 5/8" and 11 1/4")

PREPARING THE DECK:

Roof deck must be at least 3/8" (9.5 mm) thick APA-approved plywood, or at least 7/16" (11 mm) thick APA-approved non-veneer, or at least nominal 1" (25 mm) thick wood deck, not more than 6" (150 mm) wide.
Apply underlayment as required. CertainTeed suggests that a layer of shingle underlayment be applied. For UL fire rating, underlayment is generally required. Apply flat and unwrinkled.
Snap chalklines to assure shingles will be correctly aligned. Expose all shingles 5 5/8" (143 mm).

STARTER COURSE:
1. Use Metric three-tab self-sealing shingles as the starter shingles, after removing the lower tab portions, or cut English dimension three-tabs to provide starter shingles that are 7 5/8" in height.
2. For the first starter, cut 5 5/8" from one of the starter shingles.
3. Apply the remaining piece to the lower left corner of the roof. Make sure there is 1/2" overhanging the rakes and eaves if drip edge is being used. If you are not using drip edge, make the overhang 3/4".
4. Use full length starter shingles for the rest of the course.


 
Figure 13: Applying the first 5 courses of Metric dimension.

1ST COURSE:
Apply a full shingle at the lower left corner of the roof. Make the lower edge and left edge lie flush with the edges of the starter course
(Figure 13).

2ND THROUGH 5TH COURSES:

CAUTION! Failure to follow instruction steps 1-5 below will bring joints too close together and may cause unattractive patterns!

1. Cut 5 5/8" off the left end of the first shingle and save this piece for later use. Apply the 33 1/8" (34 3/8" for Landmark TL) long piece over and above the first-course shingle. Leave the bottom 5 5/8" tab portion of the first-course shingle exposed (Figure 13).
2. Cut 11 1/4" off the first shingle of the third course and save this for later. Install the 27 1/2" (28 3/4" for Landmark TL) long piece over and above the second-course shingle.
3. Apply the previously removed 11 1/4" long piece over and above the third-course shingle.
4. Apply the previously removed 5 5/8" long piece from the second course over and above the fourth-course shingle.
5. Install a full shingle against the right edge of each shingle in courses one through five.

CONTINUING UP THE ROOF:
1. Beginning again with a full shingle, repeat the five-course pattern up the left rake.
2. Fill-in courses across the roof in a stepped diagonal fashion using full shingles. Do not run courses straight across.

IMPORTANT: Do not align joints of shingles closer than 3 1/2" from one another.

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Chimney Flashing


Figure 14: Step flashing minimum dimensions.
*NOTE: Use 75/8" or more for metric dimensions and Landmark TL shingles

.

Figure 15: Flashing around a chimney.


One Roof-Over Method
for English Dimension Shingles

PREPARING THE ROOF SURFACE FOR REROOFING
Make the surface of the old roof as smooth as possible by replacing missing shingles. Split and nail flat all buckled, raised tabs and curling shingles.
It’s a good idea to cut old shingles back flush to the rakes and eaves.
We suggest that you apply corrosion-resistant drip edge along the rakes and eaves, covering the edges of the old shingles. This will provide a uniform and straight edge that will help prevent water from seeping under the shingle edges.

“Nesting” Combined With The Five-Course
Diagonal Method (“Sevens And Fourteens”)


NOTE: Nesting is preferred over “bridging” methods when reroofing because nesting sheds water best and looks better. Nesting, as described below, is an easy application over square-tab asphalt strip shingles with a 5" exposure. If you are covering a different type or size shingle, you may need to cut back the tabs so that nesting is possible. To do this, simply cut off the leading edge of all old shingles when they are lapped less than 2 1/2" by the new shingles. This permits a flat nested application that avoids lifted edges and slumps.

STARTER COURSE:
1. Remove the tabs and the top 2" from standard self-sealing shingles, leaving 5" by 36" strips.

Figure 16: Five-Course Diagonal, Nested.

2. Cut 7" off the length of the first strip, apply the 29" remaining piece over the old first course at the lower left corner, overhanging the rakes and eaves 1/2" if drip edge is used, or 3/4" if no drip edge is used (Figure 16).
3. Continue with full-length starter shingles along the eaves
(Figure 16).

1ST COURSE:
1. The first-course shingles are made of full Landmark shingles with 2" cut off the bottom of the tabs
(Figure 16).
2. Align the first-course strips with the left and lower edges flush with the starter course.


2ND THROUGH 5TH COURSES:

CAUTION! Failure to follow instruction steps 1-5 below will bring joints too close together and may cause unattractive patterns!

1. Cut 7" off the left end of the first shingle and save this piece for later use. Apply the 29" long piece over and above the first-course shingle. For this and all succeeding courses, align the top edge of the shingle to be applied with the bottom edge of old shingles in the next course. Exposure of first course only is reduced to 3"
(Figure 16)
2. Cut 14" off the first shingle of the third course and save this for later. Install the 22" long piece over and above the second-course shingle.
3. Apply the previously removed 14" long piece over and above the third-course shingle.
4. Apply the previously removed 7" long piece from the second course over and above the fourth-course shingle.
5. Install a full shingle against the right edge of each shingle in courses one through five. Remember that course one shingles are only 10" wide.

CONTINUING UP THE ROOF:
1. Beginning again with a full shingle, repeat the five-course pattern up the left rake.
2. Fill-in courses across the roof in a stepped diagonal fashion using full shingles
(Figure 16). Do not run courses straight across.
IMPORTANT: Do not align joints of shingles closer than 3 1/2" from one another.


Back to Top

One Roof-Over Method for Metric Dimension and Landmark TL Shingles

The same method used for clean-deck application of these shingles is used for roof-overs. Application of these shingles over English dimension shingles is not recommended -- due to the high cost of workmanship and greater risk of worker error.

Hips and Ridges

Shadow Ridge™ Accessory Shingles For Hips And Ridges

Figure 17: Shadow Ridge accessory shingles detach easily from three-piece units to make 72 individual cap pieces.
Shadow Ridge accessory shingles have an accented shadow line that is designed to be used with laminated shingles to cap hips and ridges. Easier to apply than cutting full-length shingles at the tab cutouts and trimming the ends of a cap (a total of eight knife cuts), simply fold along the pre-cut lines and detach individual cap pieces. Save valuable installation time.

Shadow Ridge accessory shingles are available in English and Metric dimensions. A wide array of colors are available to complement the main roof colors.

There are 24 three-piece units in each Shadow Ridge bundle, providing 72 individual caps that will cover 30 linear feet (33 3/4" linear feet, Metric) of a hip or ridge. Each English dimension cap piece is 12" by 12" (Metric caps are 13 1/4" x 13 1/8") and features clipped corners on the bottom edge of the exposed portion.


Figure 18: Apply a full cap shingle over the starter piece, flush with the bottom and side edges of the starter.

Figure 19: Install cap shingles at their correct exposure and cover all fasteners.

Figure 21: Use laying notches to center shingles on hips and ridges, and to locate the correct exposure.
APPLICATION IS AS FOLLOWS:

1. Apply shingles up to the hip or ridge on both sides, then trim flush.
NOTE: The last course of shingles should have an exposure of 5" (5 5/8" for Metric)
or less when the shingle cap or ridge vent is fastened in place. Otherwise, a potential water leak could occur at exposed shingle end joints.

The figures used in this section illustrate the application of accessory shingles over a ridge vent; application directly to the roofing is very similar.

2. Install caps beginning at the bottom of a hip or at either end of a ridge. Apply a starter piece that has the bottom 5" (5 5/8" for Metric) removed (Figure 18). Fasten the starter with two nails located about 3" from the rake edge, and 1" in from each side edge. Make sure fasteners used to apply caps penetrate at least 3/4" into or through the decking.
NOTE: To assist in proper alignment when ridge vent is not used, snap a chalk line parallel to the hip or ridge along the line where the side edges of the cap shingles should be.

3. Apply a full cap shingle over the starter (Figure 18), and place fasteners at 5 5/8" (6 1/4" for Metric) up from the exposed bottom edge and 1" in from each side. Nails must not be exposed on the finished roof. All nail heads must be driven straight and must not cut into the shingle surface.
NOTE: Each cap has a laying/alignment notch at the top edge to center the piece on the ridge line, and two notches on each side to indicate the correct exposure and shadow-line placement
(Figure 20). The side notches of the cap being applied should be aligned with the top edge of the previously applied cap.

Figure 20: Each Shadow Ridge shingle has a centering notch and
two side-alignment notches to help ensure proper placement.